GB2406467A - Method and apparatus for zero-copy receive buffer management - Google Patents

Method and apparatus for zero-copy receive buffer management Download PDF

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Publication number
GB2406467A
GB2406467A GB0426300A GB0426300A GB2406467A GB 2406467 A GB2406467 A GB 2406467A GB 0426300 A GB0426300 A GB 0426300A GB 0426300 A GB0426300 A GB 0426300A GB 2406467 A GB2406467 A GB 2406467A
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United Kingdom
Prior art keywords
host
interface
protocol
payloads
zero
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB0426300A
Other versions
GB2406467B (en
GB0426300D0 (en
Inventor
Ariel Hendel
Jochen Behrens
Ajoy Siddabathuni
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sun Microsystems Inc
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Sun Microsystems Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sun Microsystems Inc filed Critical Sun Microsystems Inc
Publication of GB0426300D0 publication Critical patent/GB0426300D0/en
Publication of GB2406467A publication Critical patent/GB2406467A/en
Application granted granted Critical
Publication of GB2406467B publication Critical patent/GB2406467B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/90—Buffering arrangements
    • H04L49/901—Buffering arrangements using storage descriptor, e.g. read or write pointers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/90—Buffering arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/90—Buffering arrangements
    • H04L49/9047—Buffering arrangements including multiple buffers, e.g. buffer pools
    • H04L49/9052—Buffering arrangements including multiple buffers, e.g. buffer pools with buffers of different sizes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/90—Buffering arrangements
    • H04L49/9084—Reactions to storage capacity overflow
    • H04L49/9089—Reactions to storage capacity overflow replacing packets in a storage arrangement, e.g. pushout
    • H04L49/9094—Arrangements for simultaneous transmit and receive, e.g. simultaneous reading/writing from/to the storage element

Abstract

An apparatus and method for managing the receipt of communication traffic in the form of packets or other units. The apparatus includes a communication interface (e.g., a NIC, a TCA) coupled to one or more host computer systems. Through Direct Memory Access (DMA) operations, the interface reassembles payloads of received packets in host buffers based on their sequence numbers, without buffering them in the interface. Packet headers are separated from the payloads and passed to a host for protocol processing after the payload DMA is completed. Host buffers may be of virtually any size. For each communication connection, state information is maintained on the interface, which may identify an upper level protocol so that an upper level protocol header is passed to the host as part of the packet header, not as part of the payload. Protocol termination remains in the host.

Description

GB 2406467 A continuation (74) Agent and/or Address for Service: D Young &
Co Holborn, LONDON, EC1N 2DY, United Kingdom
GB0426300A 2002-07-18 2003-06-17 Method and apparatus for zero-copy receive buffer management Expired - Fee Related GB2406467B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/198,923 US7142540B2 (en) 2002-07-18 2002-07-18 Method and apparatus for zero-copy receive buffer management
PCT/US2003/018928 WO2004010311A2 (en) 2002-07-18 2003-06-17 Method and apparatus for zero-copy receive buffer management

Publications (3)

Publication Number Publication Date
GB0426300D0 GB0426300D0 (en) 2004-12-29
GB2406467A true GB2406467A (en) 2005-03-30
GB2406467B GB2406467B (en) 2005-06-01

Family

ID=30443205

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0426300A Expired - Fee Related GB2406467B (en) 2002-07-18 2003-06-17 Method and apparatus for zero-copy receive buffer management

Country Status (4)

Country Link
US (1) US7142540B2 (en)
AU (1) AU2003238224A1 (en)
GB (1) GB2406467B (en)
WO (1) WO2004010311A2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2500175B (en) * 2012-03-06 2014-08-20 Appear Tv As Method,device and system for packet transmission over IP networks
US9137168B2 (en) 2012-03-06 2015-09-15 Appear Tv As Method, device and system for packet transmission over IP networks

Also Published As

Publication number Publication date
GB2406467B (en) 2005-06-01
US7142540B2 (en) 2006-11-28
WO2004010311A2 (en) 2004-01-29
US20040013117A1 (en) 2004-01-22
AU2003238224A8 (en) 2004-02-09
AU2003238224A1 (en) 2004-02-09
GB0426300D0 (en) 2004-12-29
WO2004010311A3 (en) 2004-04-29

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Legal Events

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PCNP Patent ceased through non-payment of renewal fee

Effective date: 20070617